Preheat oven to 375. Lightly grease a 13 x 9–inch baking pan. Cut the tops off peppers and scoop out the seeds and ribs. Place peppers in prepared pan.

In a skillet heat the oil and sauté the salmon, onion and garlic, sautéing 3 minutes or until onions are translucent. Place mixture into a bowl. Combine onion mixture with farfel, marinara sauce, 1 cup cheese, salt and pepper.

Divide mixture evenly into prepared peppers. Cover the pan with aluminum foil. Bake for 35 to 45 minutes or until peppers are tender but not falling apart. Remove them from oven and sprinkle the remaining 1/2 cup cheese on top of the peppers and return to the oven for 3 to 4 minutes or until the cheese is melted.